android apk突然运行并关闭

我使用react native在Nexus 5X上构建和安装apk，但突然关机。我使用adb logcat查找以下错误：

01-06 10:04:19.086 12909 12926 I ReactNativeJS: Running application "YCParAppAndroid" with appParams: {"initialProps":{},"rootTag":1}. __DEV__ === false, development-level warning are OFF, performance optimizations are ON
01-06 10:04:19.343 12909 12926 E ReactNativeJS: null is not an object (evaluating 'e.username')
01-06 10:04:19.379 12909 12927 E AndroidRuntime: FATAL EXCEPTION: mqt_native_modules
01-06 10:04:19.379 12909 12927 E AndroidRuntime: Process: com.ycparappandroid, PID: 12909
01-06 10:04:19.379 12909 12927 E AndroidRuntime: com.facebook.react.common.JavascriptException: null is not an object (evaluating 'e.username'), stack:
01-06 10:04:19.379 12909 12927 E AndroidRuntime: value@590:2102
01-06 10:04:19.379 12909 12927 E AndroidRuntime: <unknown>@65:562
01-06 10:04:19.379 12909 12927 E AndroidRuntime: callTimer@60:785
01-06 10:04:19.379 12909 12927 E AndroidRuntime: callTimers@60:1203
01-06 10:04:19.379 12909 12927 E AndroidRuntime: value@58:2827
01-06 10:04:19.379 12909 12927 E AndroidRuntime: <unknown>@58:1062
01-06 10:04:19.379 12909 12927 E AndroidRuntime: d@58:130
01-06 10:04:19.379 12909 12927 E AndroidRuntime: value@58:1034
01-06 10:04:19.379 12909 12927 E AndroidRuntime:
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.modules.core.ExceptionsManagerModule.showOrThrowError(ExceptionsManagerModule.java:97)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.modules.core.ExceptionsManagerModule.reportFatalException(ExceptionsManagerModule.java:81)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.bridge.BaseJavaModule$JavaMethod.invoke(BaseJavaModule.java:318)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.cxxbridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:158)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:739)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at android.os.Looper.loop(Looper.java:148)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:196)
01-06 10:04:19.379 12909 12927 E AndroidRuntime: at java.lang.Thread.run(Thread.java:818)

01-06 10:04:19.086 12909 12926 I ReactNativeJS:运行应用程序“YCParAppAndroid”，appParams:{“initialProps”：{}，“rootTag”：1}__DEV_u===false，关闭开发级别警告，启用性能优化
01-06 10:04:19.343 12909 12926 E ReactNativeJS:null不是对象（评估“E.username”）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:致命异常：mqt_本机_模块
01-06 10:04:19.379 12909 12927 E AndroidRuntime:进程：com.ycparapandroid，PID:12909
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.common.JavascriptException:null不是对象（评估“E.username”），堆栈：
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：value@590:2102
01-06 10:04:19.379 12909 12927东安德律敦时：@65:562
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：callTimer@60:785
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：callTimers@60:1203
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：value@58:2827
01-06 10:04:19.379 12909 12927东安德律敦时：@58:1062
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：d@58:130
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：value@58:1034
01-06 10:04:19.379 12909 12927东安卓鲁尼时间：
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.modules.core.ExceptionsManagerModule.ShoworRowError（ExceptionsManagerModule.java:97）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.modules.core.ExceptionsManagerModule.reportFatalException（ExceptionsManagerModule.java:81）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:at java.lang.reflect.Method.invoke（本机方法）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.bridge.BaseJavaModule$JavaMethod.invoke（BaseJavaModule.java:318）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.cxbridge.JavaModuleWrapper.invoke（JavaModuleWrapper.java:158）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:在com.facebook.react.bridge.queue.NativeRunnable.run（本机方法）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:at android.os.Handler.handleCallback（Handler.java:739）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:at android.os.Handler.dispatchMessage（Handler.java:95）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage（MessageQueueThreadHandler.java:31）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:at android.os.Looper.loop（Looper.java:148）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run（MessageQueueThreadImpl.java:196）
01-06 10:04:19.379 12909 12927 E AndroidRuntime:at java.lang.Thread.run（Thread.java:818）

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有人遇到过这个问题吗？

你有一个空错误，我的朋友：

null is not an object (evaluating 'e.username')

• 检查本机模块是否返回有效的承诺或解决方案 回拨
• 确保您的返回值为
• 确保本机模块js文件返回有效的Promise或Callbacl

01-06 10:04:19.343 12909 12926 E ReactNativeJS:null不是对象（正在评估“E.username”）

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您试图引用null对象的属性，这是错误

e。用户名为null。您可以调试并检查它为什么为空谢谢！我关注致命的异常：mqt_native_modules错误，但忘记了看到null错误。我应该在代码中添加空评估。谢谢谢谢，问题解决了！我关注致命的异常：mqt_native_modules错误，但忘记了看到null错误。我应该在代码中添加空评估。谢谢